915 Tranny Conversion Options Options

[Coloradocurt]

I've already done a good bit of searching and have yet to find what I'm looking for, so here goes-
Is there a good, comprehensive thread which explores/discusses the tradeoffs (functional performance, prices, availability) of the various options for converting a 915 tranny for adaptation to a 914-6 conversion project.
Thanks.

[Steve]

No matter what, the 901 is easier to shift, cheaper and weighs less.
10lbs less than a magnesium 915 and 20lbs less than an aluminum 915.
The Bott kit is a true 916 kit, so your buying a piece of history. It also supports a stock 914-6 muffler. It also has a reverse light setup. Wevo does not and requires a special muffler. The positive side for wevo is that it's been out longer, which means more shops in the US are familiar with it. CFR has installed both. If the 901 is too annoying for you then I would have CFR build you a Bott 916 gear box. Then you have to decide what box to use. The last year magnesium 915 box has an 8:31 ring and pinion, horse shoe spring and electric speedometer. This trans is highly sought after, because it's lighter than the alumninum 915. I'm running an 86 915 gear box, because it's the last year made and has 108mm cv flanges. The earlier 915's only have 100mm flanges, which is no big deal. The 108's are overkill.