Are you running a big bell or a small bell C4? Either way I think all you have to do is pull the headers put the tranny then install them. I just let the headers hang in the engine bay loose and wiggle the c4 in then bolted them back on that is with a small bell and BBK LT's
------------------
88LX 5.0,C4,3200stall,TFS stg 1 cam, ported E7's, BBK LT's, Race magnum bullets, ASP 3" pulley, 3.73's, 75hp NOS Dry Kit, Explorer intake
7.94@85 N/A 1/8th C4
7.61@89 N2O 1/8th T-5
http://www.angelfire.com/ns/PurgingPony/50mainpage.html