I saved the same picture of Blake's nova to duplicate the exhaust set up on my camaro. Looks like a tight fit tho. Mock it up and move the rear suspension around without springs to check for clearance.
I seriously doubt any negative effect on power would be great enough for you to notice. The effect on the sound of the exhaust system by not having the balance pipe would be greater. That's just me though. I don't like the sound of dual exhaust without a balance pipe.
You can always go with an H pipe if that would be easier.
__________________
Trey
Current rides: 2000 BMW 540i/6 and 86 C10.
Former ride: 1979 Trans Am WS6: LT1/T56, Kore 3 C5/6 brakes, BMW 18in rims
Funny, I'm exactly the opposite. I hate the sound of an X-pipe dual exhaust.
__________________ Steve Hayes
"Dust Off"
68 Camaro
Speed has never killed anyone. Suddenly becoming stationary, that's what gets you! "Jeremy Clarkson"
Here's how we're doing mine with the BMR torque arm... only way to get an X-pipe to fit between the trans cross member and the front mount for the torque arm.
__________________
Ty Ingle, USAF Retired
FREEDOMBIRD
Hoodpins.com, Inland Empire Driveline, Billet Accessories Direct, Modo Innovations, AutoRad Radiators, Morris Classic Concepts, Marquez Design, Anvil Auto, Fesler Billet, US Collision (DOOM), AGR, Pro-touringF-body.com, Phoenix Transmission Products, Shiftworks, ACC Carpet, Hedman Hedders, BMR Fabrication, American Autowire, MityMounts, TIN INDIAN Performance, Kauffman Racing Equipment, Pypes, RobbMc Performance, WMC, Holley, NOS, PST
I'm no engineer and I didn't even stay at Holiday Inn but I think all those cars with sideways Xpipes would make more power and sound better with a simple H pipe.