Did anybody do this? Any useful procedures? thanks ------------------ 91 Formula 305 TPI 5speed 1LE/G92/WS6 Paxton SN92, Ford SVO 24#injectors, Crane AFPR,SLP airfoil, ported/polished plenum, March alt. pulley,Crane Gold 1.6rrs,MSD coil,MSD6AL (5400rpm limit),Holley 9mm wires,Ac delco R43ts plugs,stock chip,Bosch O2sensor,SLP 1 5/8" headers,SLP catback,shortened shifter,3:73s w/Auburn posi,180* t-stat,JET 195* fan switch, Macewen white face gauges, Autometer gauges, Zoom hi-performance clutch.

I had my stock 48 mm TB milled to 52 mm. The guy who did it had done several before so he know what he did. If you havent done it before I wouldnt recommend it, but sometime must be the the first time.......If you got a good mill and are willing to try go ahead. You must get new throttle blades, but I'm sure someone else on the board can tell you where to get some( I got mine in sweden...)

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GTA -89:Free flow muffler,dual 3" HF cats, Edelbrock headers, Vette heads, 1.52 RR 7/16, ZZ-9 cam, Big Mouth, AS&M LTR, !plenum, 52 TB, MSD 6AL, TPIS level V prom, Superior shift-kit and all the minor mods, a AFR 195 headed 383 in the works!! ready May 2001...
http://www.itv.se/tacs/members_cars/m279/m279.html (Swedish Trans Am Club)