elcamino814 said:i have an 81 elco and have tubular non adjustible umi upper and lower control arms, QP 9 inch with a 3.70 gear , stock v6 rear springs and some 275 mt drag radials. im in the process of putting a 388 sbc in now that should have 550 hp on spray but ill let you know how it hooks once im done. should be next week!