I’ve done the L86 intake manifold and throttle body swap and it’s a cheap and money well-spent mod with proper tuning. Very noticeable gains across the board. Most gains are down low where you need it the most. I’m moving up to the LT5 throttle body with a billet adaptor to see what gains can be had with that. 4x4 double cab, 3.42, full weight, longtubes, off-road y-pipe, 3” exhaust, 4” tube to stock air box with AEM dryflow filter, 160* t-stat, E85 conversion, ngk iridium spark plugs. Sent from my iPhone using Tapatalk