Hi all! This summer I was planing on buying a new bass, but I already have 2 fretted 4-strings.(A 92' MIM P-Bass and an Ibanez GSR200) I was planning on getting some thing al little different as my new bass, like a multi-stringed bass or a fretless. I just recently considered building a bass since, after all, I would like to pursue a career in luthiership and figured that would give me some idea of whether or not I really want to do this. I was looking at Warmoth parts today and came across their 8-string conversion neck. Now, I added up the price of all the specs a would want in an 8-string, and it was out of my price range of $800 and under. So then i cosidered actually doing a "conversion" on my GSR200. But, problem is that I'd need to modify the neck pocket on the GSR to fit the Warmoth neck. I could just convert my Fender, but that bass has alot of sentimental value and I wouldn't dare modify it. But, heres my question (finally!): What would I have to do in order to modify the neck pocket on my GSR? Would it have to be bigger or smaller? (It's too late at night to do the math! ) And, how much would such a modification cost? I wouldn't want to do this all by myself, seeing as how i wouln't want to potentially ruin my bass. P.S.: By the way, I mean an 8-string with octave pairs.