problem is if it were any less it would bring back so many results you would be better off just searching thru posts.

a 2 letter search v6 to v8 swap would bring back every post that contains the to. it would be so memory intensive every time someone did a search that you would get a slower forum.
the search function isnt an engine like google or anything which can search for phrases that contain v6 to v8 swap, its a basic word search.

in the advanced search you can limit the forums you search in.

so maybe search in the lsx conversion forums, which narrows it down to 1548 threads, find a decent search word that isnt so vague as swap or to or v8, those words are in almost every thread in that section so a search on them wouldnt help much.

what is it specifically you are looking to find?