Wtf do I weigh 8000+ or some redonkulous amount.
And awesome you figured out the 4WL.
I did a tune on one of those awhile back, all I did was bring in power enrichment at 1000 rpm with no delay and a quick ramp in, updated the O2s to Camaro SS style lean/rich scales, added *2 to the entire timing curve, copied the high octane table to the low, added 30 or so psi to all the tranny tables, and copied over a bit of tow haul stuff in.
It left the driveway sideways until 2nd, and ran awesome.
Then blew 3rd.