i difinately would have that looked at before buying it... especially cuz its CR-vtec... if it wasnt built right as mentioned before, you will ahve headaches... hopefully the person that built the engine use ARP Rob bolts, head studs, etc... so yeah it atleast has some reliability....
other that that the usual check for any damages on the body, if everything works, etc... it seems like a good buy... still try to get it for a lower price though.... lol
as for modding it, depends on what u want...striaght line or turns... lol i wouldnt boost that if ur planning on taking turns IMO... but if ur going for a straight drag race setup well then i would say boost it. WideBodyEK on here has a boosted fully built Cr-vtec setup ask him about that.... but yeah seems like a good buy but for sure check up on it... good luck