I have receipts from my 76 from PO re swap from Sporto to 5 speed.
915 $5350
915 Pedal Set $1650
Ring Gear $265
Flywheel Bolts $165
Clutch Cable $176
Clutch Plate $375
Spigot Bearing $44
Various nuts, bolts, springs, washers, etc $300
They charged 16 hours labour to do the job.
Total parts $8325 and that was 2012 prices.