68 Chevy Stepside 4X4 Lift Options

[mtnxtreme]

Just got a 68 stepside for free, been laying in the bushes for 5 years, gonna pull the cab and bed to clean it up, wanna do a 4" lift. Can anyone tell me the cheapest way to lift this truck 4", with a decent ride, I have a full shop so can do almost anything, but don't want to do 2 days work to save 200 bucks if you know what I mean, I know blocks were the norm back in the day, heard they are a no no now and heard abt. a shackle flip in rear and new springs in front being the best and most economical approach, can anyone shed some light ? Also what wheel size, offset and max tire size should I be using ?