Mallory Unilite distributor for Olds 455 350 330 400 Cutlass 442 W-30 F-85 bidding on this for my olds is this a good buy?http://www.ebay.com/itm/300666715457?ssPageName=STRK:MEBIDX:IT&_trksid=p3984.m1426.l2649 i hope i can use this because i bidding high on it i probably should have just stuck with HEI ones huh?