So, I should probably come clean with you guys. My 55-60 that I was thinking of putting a preamp in is fretless. I do, however, have a 55-01 with a bound and blocked neck that I was going to switch out with the fretless 55-60 neck, making the 55-01 the fretless and the 55-60 a Jazz with a blocked and bound neck. I have a thing for blocked and bound necks and I really like my basses to sound modern and hi-fi, hence the preamp idea. I'm just not much of an old school guy. And I really have been jonesing for a Lakland Jazz style bass. I already own a 1997 55-94 that is the absolute best bass I've ever owned. Well, I played the fretless 55-60 at practice last night and, honestly, it was probably the most fun I've had playing bass in a long time. That thing was awesome! What a cool guitar! I've messed around with fretless in the past, but was never really very serious about it. Last night I felt like a fretless player! It was amazing! So now I have a different problem...I need to find another bass to put that blocked and bound neck on. For whatever reason, the 55-01 and I just don't seem to gel. It plays good and sounds fine, but I just don't feel any affinity toward it. Maybe it should be the one to get modded? Any suggestions? I'll post a family picture when I get home from work. Thanks guys.