Mine is mostly stock. hp/torque specs are almost identical between a 2.9 and my year 3.0 according to this site. 2.9 is 140 hp/170 torque and mine is 145 hp/ 178 torque. I know my truck normally weighs right around 3300-3400 pounds with me in it. Not sure what a 2.9 weighs since cab size and bed length would make a big difference. My friend has a 2.9 lifted ranger and I swear (10 years ago) he said it had a Muncie 3 speed tranny but I don't even know if that old truck is even road worthy anymore. Last I knew it was a mud truck and stayed in the junk yard under 30 mph lol. It's hard enough finding 90's rangers to race on the road. They used to be as common as a penny on the ground at a gas station and now you rarely see 90's rangers.
I guess i never lined up with a newer 3.0. The older 3.0s were 145hp/165ftlbs. 2.9 was 140hp/170ftlbs.
Difference is the 2.9 hits peak at 2600rpm and the 3.0 at 3600.
My reg cab/long bed 1st gen weighs around 2700lbs. Plus i got a 3.96:1 1st in my TK5 trans.
Id like to see torque curve charts on the 2.9 and 3.0. Id be willing to bet the 2.9 has a considerable amount of torque advantage over a 3.0 up to about 3000rpm, and even past that i bet the 2.9s within a few ftlbs of the 3.0 all the way to redline.
Id still put my money on the 2.9 over even a newer vulcan though...they just pull so strong (for what they are) comin outta the hole.