We have a tranny builder in our buick club and wants to sell me a 350 (says will handle high 9's) for the gn. One ? for you guys is does the crossmember need to be moved to use this tranny. I already have the hr parts tranny mount for a 400. Also he says the splines are the same on a 350 and 200r4 so that would save me on the 400 yoke install . Let me know on the 350 install guys thanks