McMark -
First post here since I have been in lurk mode for awhile in my quest for a 914. I thought I would offer up some information to help confuse you.
I own two Land Rovers, one a Defender 90 and one a Range Rover LWB. I would not recommend using a Defender for towing, but Range Rovers are very capable of towing. Here is a
link for your reading pleasure that is topical.
Rovers have heavy duty axles and drivetrains, and designed oil and transmission coolers from the get go.
You are contemplating putting in a V8 and an automatic tranny. That is exactly what Range Rovers feature. The Rover V8 is based off the Buick 215 and has an exceptionally flat torque curve from very low speeds. The transmission is a ZF 4HP22 and is a solid performer. You do not have to make a large powertrain retrofit like you would with the FJ55. Use a FJ55 with a load on the back via California freeways and you will live in the right lane.
Others on this thread have mentioned their past experience and frustrations with Rovers. They are definitely not for everyone. If a small electrical switch going bad drives you nuts, this may not be your solution.
Seanery mentioned the killer expense of air suspensions, and the Land Rover shop across from you talked about replacing the air springs with coils. I have looked at this issue ad nauseam. Relacing bladders used to cost $500 per wheel. If the air suspension valve block went out, it was $1,400 new from the dealer. That, in my opinion is where Rover gets it reputation.
Currently Arnott Industries provides bladders for $100 per wheel, with a life time guarantee. I just replaced all the o-ring and reworked my entire air suspension valve block and springs from a kit that cost $12. I am good to go for another 125,000 miles. I would not hesitate to buy a Range Rover Classic that has an air suspension issue, because it can be purchased from a "don't wanter" for cheap and fixed with parts that will not bust your budget.
If you were doing expeditions in a third world country, then I would consider the coils a safe way to go. If you want to pitch the air suspension, that is easy to do for about $450. The key to the air suspension is that is does self levelling, and when you are hauling, that is a great feature to have. Some people moan about the negatives of an air suspension. I remind them that tires are filled with air and most 18 wheelers that carry loads millions of miles each day use air suspensions.
I am not trying to talk you into a Rover, but you have a distinct advantage over most owners. You are very knowledgeable about wrenching, and have a Land Rover shop within shouting distance. For the $8,000 you are talking about, you can purchase a well taken care of RRC, completely redo the air suspension for $500 and bank $4,000 for future repairs.
Just my $.02.
BTW, I am looking for a teener in San Diego area and really like this forum as a resource. I have started my long term RAT fund and look forward to your posts.
Good luck with your towing purchase no matter which direction you go. If you do end up buying a Rover, let me know and I will help you with any air suspension issue you run into.
Cheers,
Jeff