I was wondering i got a 96 civic DX and some guy is selling a 96-00 Civic single overhead cam vtech head This head had a three angle vavle job, was ported, polished and milled. Was used for appox. 2000 miles. would this be worth putting in my civic. and is this something i could do myself and how hard would it be to do? also is there anything else i would need in order to install it? thanks please let me know