After towing my 24' travel trailer the last 2 years, I have decided I need better power. My present 383 (17,000 miles) is strong but not what I'm wanting. Past tow rigs have always used 454, 460 or 513 sized engines. I think I need a 427BB for reasonable power increase over the 383. Any advice on where I can get a good one built? I still want reasonable fuel mileage when not towing. 87 K5, D60 & 14FF, 5 sp & NP208 & 383 stroker. Build it Bulletproof and take it fishing!