A professional rebiuld usually runs about $250. A new T3/T04E costs $550. If your manifold is flanged for a T3, I would just get a new T3/To4E and have your downpipe converted to a 4-bolt flange. Depending on what manifold you have, there may be cleanrance issues with a 4-bolt discharge T3/T04E. Most people have to grind some of th block webbing arounf the bell housing. Or, if you don't have A/C, just put the compressor on the driver side. It'll be easier to make a new downpipe that way also.