[1bad420A]

first of all i am very new to the forum sites. I have a 99 eclipse (hyperlink removed...please read rules and regulations governing posting of links-Shpyder) gs with the 420a. i recently had a nitrous backfire due to user error which threw a rod threw the block. I am set on useing nitrous so i bought a forged short block from slowboy racing which comes with wiseco 10.5 to 1 pistons and eagle rods, i had the head ported and polished (intake and exhaust) and had it resurfaced a lil less than 10 thousands. so i will be running a lil less then 11-1 compression. i have stock cams, a header, intake, and catback exhaust. I will be running a 100 shot of nitrous. my question is how can i retard the timing on the motor. i have heard i can get a msd-dis retard box, or if i can find one a apexi ignition timing controller. i need to know the best route