wheel offset/scrub radius/tire size calculator. handy for doing the MII
https://www.wheel-size.com/calc/?whe...cl=50mm&sr=0mm
rpm calculator
https://www.ringpinion.com/calculators/Calc_RPM.aspx
info on different years-gm manuals
http://chevy.oldcarmanualproject.com...esto/index.htm
rpm calculator
http://www.csgnetwork.com/multirpmcalc.html
general interest, ls engines, tube notching, other stuff to peruse when you can't sleep
http://billavista.com/tech/index.html
original manufacturer body builder manuals which include a lot of diagrams and info for doing swaps.
gmupfitter.com