To be honest, I wouldn't know how long SRT-4's/PTGT's will last, but a purpose built turbo engine and truck manual truck transmissions NVT850/Getrac should last for a bit.
Of course, doesn't help when the younger generation is racing the SRT-4's down to the ground. Okay, I'm guilty of bringing my RPM's up to the 6000 range from time to time on my GT [
].
I know my 1993 Lexus GS300 (Luxury Toyota) is still running after 153k+miles. However, its a real sleeper car....... nothing exciting about it other than its quiet and can't beat a honda civic ex. At least, I don't get the incentive to race the engine compared to my GT. In addition, as long I don't race the car, it will last
.