Found my 51 Chevy pickup has a 56 chevy 235 engine, with an add on oil filter. Was talking to NAPA dealer today about replacement oil filter, as soon as finish rebuilding carb, am doing oil change. He joked about it being a roll of toilet paper, like "they" did in the old days. Well guess what, yup, found roll of toilet paper inside canister. My measurments 4 1/2 inches tall, 4 inches across, and inside whole 1 1/2 inches across . . buddy at NAPA is checking, anybody here have an idea? Told him to find a replacement and he can have the old one !