I have often read where members are asking about trans crossmembers . If you are interested , it may be worth a look at M and M Speed . They are members here at ECC . They have 7 choices that fit 78 - 87 , 4 or 5 speed manual , power glide , TH 350 , TH200 , 200/400 and 700r4 , Tremec and Richmond manuals . Made by a quality chassis shop , they have reduced the weight from 30 to 18 lbs. without losing strength . They also sell lots of other El Camino parts . I am not connected to them business wise . www.mandmspeed.com .