I am curious as to how many miles you actually have on your truck, and I noticed you said you finally had to motor running good again, just need to finish the front end... I would just finish it, and keep it.
You also said you drive 90 miles to work a few times a week, if that's combined, not bad, if that's 90 miles one way, 180 miles a trip, x2 would add up quick and gassers don't age as good. And if you wanna keep a animal collision front bumper, it would bog down a gas motor....
2011 Chevrolet Silverado 2500HD WT, Victory Red, 4x4, ECLB, Duramax(LML)/Allison, Heavy Duty Towing Package
Insalled: Amp Research, Amsoil, ATS, Autometer, B&W, Back Rack, Bushwacker, Code Alarm, Cognito, DRP, FASS, Goodyear, H&S, Hypertech, Mayhem, MBRP, Plasti Dip, Precision, Ranch Hand, Rearview Saftey, Rhino Linings, Rigid Industries, Rough Country, S&B, Snow Performance, Titan, Warn, Weather Guard
Need the Guts to Install: Frost Fighter.