I have a 1969 Cuda 440 with a Hemi 18 spline trans in it. I was wondering who here has modified one on the street with making it a crash box or face plating? I'm looking to redo the trans because I'm having shifting issues under high RPM and trans popping out of gear sometimes... I thought possibly going to a G-Force or Richmond 5sp. Please give me some input on what you guys have done or have had experience in the past.

Thanks
Rob