Will this crossmember work for my 84 Regal with a 200-4r trans? http://www.jegs.com/cgi-bin/ncommerce3/ProductDisplay?prrfnbr=909&prmenbr=361
The 700-r4 crossmember should work--I think that the 700-r4 is just a beefier version of the 200-r4 as far as the internals go but the exterior dimensions are the same
The 700-R4 & the 200-4R are two very different animals. I don't believe they have much, if anything, in common parts wise. Gear ratios are all different. The 700-R4 also was made with a Shivvie bellhousing and will not fit Buick, Olds & Pontiac without an adapter. The 200-4R was primarily a BOP trans but some were produced with a dual-pattern bellhousing. Hope this helps..
alec296 is right--its the Turbo 400 and 200r4 that use the same crossmember, not the 200r4 and 700r4...my mistake. I know that crossmembers.com is another place that you could find the crossmember that you need, just fyi.