From the early specks I have checked that the XR had slightly higher fuel pressure and the XR 6 eec wasn't that much different. So I'd try an adjustable fuel pressure reg first. Or buy another one and try to modify it by compressing it some. But keep a spare just in case you stuff up!![That way you won't stuff up!!]
Do a search it has been mentioned about upping the f/p on std regs...
Don't be afraid to try something new. Remember, amateurs built the Ark...Professionals built the Titanic!
Tuned & maintained by "Peppertree Perfmormance". Dart block, Scat 4340 steel crank, Custom C.P pistons.Oliver rods.. Mal Wood twin plate clutch.. Twin SC61/2's,482 rwkw/ 645 rwhp..
Passengers, myocardial infarction material..