OT: 2003 Boxster S engine replacement Options

[jesiv]

Don't flame me for the Boxster post please! I have a 1975 914 just looking for advice. I am thinking there are more experienced Boxster owners here than most sites.

I am having my 2003 Boxster S towed to the dealership tomorrow. I replaced the IMS with the LN bearing last year as an FYI. On the way home from work last night my idle was rough. The highway was normal and spirited! With no problems. However when I started the car after leaving the grocery store. Smoke was apparent thru the rear window. I couldn't tell if it was white or any other color as it was dark. The car ran fine but had a rough idle in the driveway prior to shutoff. I didn't feel good about how things were going! The next morning when I started the car no smoke but rough idle! I didnt see any reason to push the situation so I stopped the engine. I have no check engine light!!

I don't think the engine is blown but it has me thinking... I could hear from the dealer I need a new engine!

So what I would like is your suggestions on is... other than a 25k porsche crate motor... What would you do? The car is perfect otherwise!

I should add this is a daily driver. No track. Like I said it is perfect otherwise

Thanks for the help!!

Regards

James