first of all, the 472 should be a screamer if its done right... (427 crank in a 502) what are the specs on that engine??? (heads, cam, CR. intake, etc?)
and you need to do the build with the sole pupose of handling, once you get into billet this, and pretty that.. your budget is gone.. if you havent bought the t-56 yet then it is worth mentioning that a tko transmission, or even a super t-10 will get the same job done for less money.. id get the OD though if you intend on driving it on the street,
while i agree on the subframe, especially if you can get some sponsor... but you could also give marcus a call at SC&C (look in the left vendor coloum), he is very well versed on suspension tuning and not only the "replace everything"-kind... you will definately need solid frame mounts and a subframe connector... and i am prety sure you will need to do somthing semi-drastic about the rear suspension..
other than that... start removing weight... EVERYWHRE.. get a scale and start going nuts.. there is alot of weighy to be removed in the interior, and every pound lost is time gained arrount the track..
ebay and racingjunk can save you alot of money and used racing seats, seatbelts, brake calipers, steering wheels gauges and so on, are every bit as functional as new ones... just cheaper... leaving more money to get the important parts (pm me your address with regards to the headers btw)
also find out what you need in the way of rollcage to run on your track
by the way if for some reason you are you willing to add fender flares? if you are then my suggestion on the wheels would be a set of used 16 inch T/A race wheels, 12 and 13 x 16, the slicks for them are prety cheap, and T/A Front Tire Size 325/35R16 and T/A Rear Tire Size 335/45R16 should give you the grip to run circles arround a bmw
http://www.hrpworld.com/index.cfm?fo...action=product