Idea #1: Have a big budget. Most superlift kits go for $1000 on average used. Coil-over conversion... good luck finding brackets... and then spend probably 5-600 on coils/shocks. $400ish for a driveshaft.
Idea #2: Search craigslist also... might find a deal. Someone on here was just selling a superlift kit but I think it might have sold already.