Once again, my 5.0L is faster then your SOHC, but your OHV 4.0L Ranger, beat my 5.0L 4 door Explorer...blah blah blah. DONT FORGET ABOUT GEAR RATIO's!!
You cant say "my 4.0L Ex was faster then all the 4.0L rangers I ever raced. so therefore all 4.0L Rangers are slower then all 4.0L Explorer's"
You also must compare the gear ratio's and tire size!
There is absolutely no way a OHV 4.0L Ranger with 3.73's and 30" tires would be slower then a 4.0L OHV 4 door Explorer with 3.73's and 30" tires, it just cant happen, the Explorer weighs 1500# more approx.
Geesh!
I can tell you my 88 BII, with a 93 OHV 4.0L (slightly modified) 4.10 gears, a custom torque converter and transmission, and 31" tires is pretty quick off the line, I can take a SOHC 4 door Explorer with 3.73's gears and stock tires, because my BII is lighter and I have a bunch of mods, but mostly because I have the 4.10 gears....back when I had 3.73's my buddies 97 Limited SOHC was faster, now I can barely edge him out.....until about 60 MPH when he starts pulling ahead....
Anyways back on topic, I would rather build a 91-94 Explorer into a prerunninr because It has the TTB front end. the 95+ IFS suspension is not as good as the beams for long travel.......
If you want to build a prerunner from an Explorer, first start off with 2wd, lock the rear, then get a equalt length bent beam kit from the aftermarket....you can learn all about them here:
www.offroadrangers.com