Natural newbie Massively changed his 98, He moved the feedneck back, shortened he bolt and used another board in his ebolt. That's a TON of work right there. If you reall y-realy love tippys and have the skill to do something like that then have at it. if you are planning to move on to some sort of speedball spacegun then I don't think it's worth the work.
NN's gun is a one of a kind and would be quite the "sleeper" in a speedball game. I want one but don't have the time, skill or $$$ to put one together myself.
Those who say "Violence never solved anything!" Never really solved anything!