mate depends where you live. I just got quoted 1500 to put in a 288 solid, so you should be looking at around 800 - 1000. Good cam the 286, i've got one!!
quite abit of work.. bottom end worked.. heads worked just need 2 b port and polished... just need high stall and diff ratio changed... wat stall u got 4 ur 286..
mate i'm running the six speed, so as much stall as i want. lol..
With mild head work, hypertech pistons, rollers good coil, roller rockers and good exhaust my 215 put out over 320hp at the wheels with the 286 and that was with the standard intake