From the NHRA 2009 Rulebook, General Regulations, 2.10, FLYWHEEL SHIELD..... All front-wheel drive or transverse-mounted applications using a clutch and running 11.49 or quicker, for which an SFI Spec 6.1, 6.2, 6.3 or 9.1 flywheel shield is not commercially available, must be equipped with a flywheel shield made of 1/4 inch minimum thickness steel plate. Shield must surround the bellhousing completely except for area of bellhousing adjacent to differential and axle shaft. Shield may be multi-piece, with pieces bolted together using minimum 3/8 inch diameter Grade 5 or M10 class 8.8 bolts; may be attached to engine and/or bellhousing. Someone made a reference in an earlier post to using conveyor belting. I remember that from days gone by and in my opinion, once you get the shield made and mounted, it wouldn't be a real bad idea to mount some belting on the interior of the firewall. I'm talking about the belting that is used to convey rock, sand and gravel from one location to another at sand and gravel operations. I'll bet if you were to ask real nice, one of the companies would give you some for free. There's a turbocharged Honda that shows up nearly every Friday night at Firebird. The owner has fabricated a shield like that detailed above. He has also added an SFI 4.1 ballistic blanket over the fabricated steel shield. The 4.1 is actually designed for use around an automatic transmission on a RWD car, but he has used it on his transverse application and made it look nice. These 4.1 blankets are dated and must be replaced every two years, so I'll bet if you check around with some of the racers at the local drag strip, you could find someone with an outdated blanket that they would give to you. Just because it's out of date doesn't mean it won't add some degree of additional protection. This car I'm describing is teched to 8.50 in the quarter. It's a real nice car from a tech standpoint and the owner is obviously very safety conscious.