What makes you believe your lifter bores are out of spec?

I've never heard of lifter bores being worn other than on race engines or severely high mile engines.

If your bores are out of spec, check out these sites.

http://www.wydendorfmachine.com/reamerkits.html

http://www.paeco.com/Valve%20lifters.htm

http://www.theengineshop.com/produc...-accessories/bronze-lifter-bushings.html

http://www.jesel.com/valvetrain/index.php/lifters/bushings

http://www.lsmeng.com/Bushings.html

1954 3600 Chevy Truck
"The Fake Truck"
In the Stovebolt Gallery
More pix on Photobucket