I run the CSR shield. I had one on my cuda's 727 when it exploded 10 years ago and it did it's job protecting me. No complaints here.

Basically your only options are the CSR shield or a blanket in a stock body car. I prefer the shield.

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