I'm with Andy on this one.
Get the TF.
IMO, the only TG that was worth anything was the RB 4500 version.
The low deck 4500 version wasn't too bad if you welded up the bolt reliefs in the 4 inner runners and ported that area to get rid if the choke point. Those were crazy restricting for sure but after that extra work how'd to get the bolts in............They were stupid tight as cast.........  Probably had to use a small allen head bolt, or something similar.
CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
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