I am putting together the parts to put a v8 in my 59 and wonder if a later model HEI will fit? Is there room with out modifying the firewall? And I am using the stock bellhousing and wonder if a bolt to block starter will fit with that bellhousing. Looks like it will be a late 70s motor and I would like to use the stock front motor mounts. A235 is coming out so probably everything will have to be replaced. Anything else I should look at?