hi, can anyone tell me is it possible to convert my volvo 460gle to turbo with out taking out the block? could i just swap the head for a turbo head and change exhaust? please let me know if this is possible also can anyone tell me if they have a 400series for parts or sale/scrap thanks

No I am sure you will have to take the whole engine out to do this properly.

Nonetheless it is cheaper to buy an already turboed Volvo. Don't waste your money on turboing a N/A. Money down the drain and finding proper tuning is a bitch.