Old muscle wants a go!

A buddy of mine w/ a really sweet early 70's Chevelle 454 wants to rumble this coming weekend. The car is awesome looking. Huge engine, gobs and gobs of hp/torque.....but I'm thinking he's way too heavy to hang. What do they run? Am I crazy?

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'90 LX 5.0; 12K original miles (no sh*&); 3.55 gears; pulleys; Edelbrock Performer Heads;
BBK shorties; MSD 6AL ignition system; Motorsport E303 cam; 75 MAF; 70 TB; Eibach spring kit;
Southside sub-connectors; K&N cone filter charger; Hurst shifter; fiberglass cowl hood; A/C-less;
rear seat-less; cat-less; Flomasters; Corbeau racing seats (fronts); 12.513 @ 108 mph