http://www2.towerhobbies.com/cgi-bin...?&I=LXNJ82&P=7
http://www2.towerhobbies.com/cgi-bin...?&I=LXBL94&P=7
Here is the clutch and clutchbell you need a shim kit also for this to work properly but i couldn't find the part# and you should be able to use the clutch nut off the savage on either of those engines.To be honest I don't see what the big deal is about the Picco engine it has .2 more hp and 1000 less rmp and 7 ports.I guess it says something that it makes more with less rpm's and less ports but it also more expensive but it may be more reliable and a better design I don't know i'm sure someone else knows more than me about this engine.Witchever engine you decide to get i'd reccamend getting heavy duty dogbone or CVDs also I just broke mine yesterday.Both of these engine drop right in with no mods to anything else you just gotta make sure your drivetrain is up to the challenge!I don't know anything about Fox glowplugs or mixing fuel but I say try the plugs and do a search about fuel on this forum I remember reading somewhere about mixing your own.