I replace front springs 350lb and rear leafs 2" lift from st louis spring . got 10" and 8" ar wheels were cheap @ $120 ea $110 ea . 4" bs. i had the 295s and when i can im going with the sportsman 28x12-15 because of the 4;11 i need the height . Everything ontop is GM Performance aluminum including the roller rockers and water pump . Heres the pics of my 79 with built 350 bw st10 and 4;11 and 4th gen seats . before pics of it lowered with cut springs and black wheels , yuk .