See LocoBob's post from last month:
http://www.zr1.net/forum/showthread....=ported+plenum
He does good work, and is a great guy.
The guys at Wazoo do good work, lots of contact info, just do a search for Wazoo..
Lee Gafkin here does good porting as well, search for LGAFF.
Having said that, there are others that do porting commercially.
Marc Haibec is hands down one of the best, his website is:
http://www.zr1specialist.com/
Corey Henderson really knows ZR1's too:
http://www.hendersonperformance.com/
SGC (South Georgia Corvetes) is another,
I don't know if Doug Rippee Motorsports still do, but they used to, and maybe Lingenfelter too.
Gone but not forgotten, The 'Ol Pirate Captian Himself, Jim Van Dorn.
He was unique, and I will miss him.
There's another member here who just opened a specialty shop, I'll have to go digging into the posts to find them.
'Crabs
'90 ZR1
#792