https://www.ebay.com/itm/50mm-bored-1991-95-TBI-flows-670cfm-Sierra-Silverado-Tahoe-Suburban-Blazer-4L60E/192266163389?epid=9023404995&hash=item2cc3f4d4bd:g:epgAAOSweR1aBvkg:rk:4:pf:0
they do. i bought this one and never installed it. sold the truck for crew cab i have now. also bought the...