I also have a centerforce setup. I just sent them my new "stock" renaut clutch and had them mod it for " max clamping pressure". Be sure to tell them what it is going in. They know about GTD 40's and will do a good job. Mine seams to work fine with about 360Hp out of a 302. If you can get a ford bellhousing setup and you currently don't have any thing then I would go with a ford clutch flywheel, starter etc.Many parts for them. Make sure you can bolt up the adapter/bellhousing to the gearbox before you take it home. Check out http://www.bell-performance.co.uk
for a good writeup on the R21T.
[ April 20, 2003: Message edited by: Howard Jones ]