This is what I would do
T-case mount 85.00
Crossmember 300.00
Shift boot 55.00
Top shift conversion 90.00
Shifter handle boot 10.00
Shift knob 10.00
Shifter retainer clip 3.00
Speedo cable 30.00
Tcase adapter 345.00
eco seals 20.00
trans output seals 13.00
  These are prices rounded up to the nearest dollar from marlins website.