I have the turn key or dressed model. Installed in 68 barracuda fastback, auto, The warranty was what made me lean towards it. With all the wiped cam lobes out there I liked that they run it for 20 min. on a dyno before they ship it. I'm pretty sure you could build one cheaper, but I'm happy with mine. $7700.00 delivered no core charge, Mine put out more than the advertised hp/tq figures.