Hello all this is my first post. I have a 1985 trans am with the original stock 305. I am doing a little upgrading with a performer eps,summit shortie headers and summit HEI. I have found, but not yet purchased aset of 305 heads that have been rebuilt by a local machine shop. The guy on craigslist selling them says they are 194 int. 160 ext. I cant seem to get a decisive answer will 194/160 work without contacting the cylinder wall on a 305 with the stock bore? Please help