Passon 5-speed

HemiMark said
My 528 CU 603 HP Hemi in my old duster chewed my Tremec up! Power shifting 1 to 2 was a nightmare at times. Although I did love driving it on the highway. 70 MPH @ 2400 Rpm 354 rear gear

was it a tremec 3550 or a newer TKO? TKO's suspose to handle more (mopar) power.