sorry guys but another 700r4 Q

[truckincurt]

i know i know its like beatin a dead horse.....but my internet is realy slow tonight its takin me like 10 mins to load one page .... so if some one could help me that would be awsome i got a 1978 chvy c-10 originaly had a 350/350 now has 383/700r4 well kinda... i herd that the original crossmember just has to get moved back so i was trying that but the crossmember makes the 700r4 sit way to high like to get the member to sit right on the frame rails the tranny allmost has to go threw the floor is there a different crossmember that i should use?!?!?! thanks for all your help!!!!