hi

just rebuilding my 350 tpi, exhaust valves are worn so going to replace them with these
http://www.summitracing.com/parts/man-10077-8

and with these springs
http://www.summitracing.com/parts/cca-987-16

just wanted to know if they will fit and work on my engine with out any machining??? ive measured but would like to make sure before i ship them to sunny England

thanks