Wondering if replacing the standard cast iron manifold with headers on these TR engines is really worth the expense. Seems to me you're only gaining a few inches before the exhaust from the four cylinders is once again fighting for space at the merge point on a single exhaust sytem like the TR4. Of course they look nice but is there actually any significant advantage to making the switch on a single exhaust system? Also to anyone who has done the conversion, how aggravating was the hand fitting/port matching that most of the venders say is required ?
Greatly appreciate your opinions and experience
Greatly appreciate your opinions and experience