since PSI done the recone he should be able to build you a drop in for it.
And for the metal shavings....once you cut out all the old softparts use some compressed air to blow out what you can. If that doesnt get it all out try so tape folded around a playing card or something similar.
93 Ford Explorer
2 saz 1500Dv1 strapped @ 1ohm
4 sets of IA components
XS D6500 under hood XP3000 in back
Mechman 260a Alt
Custom door panels