T5 swap specific to the 66 mustang 200 I6. Helpful links below.
Info - https://www.moderndriveline.com/ford-in-line-6-cylinder-bell-housing-identification-3/
Pedal kit - https://www.malwoodusa.com/hydraulic-under-dash/malwood-usa-1964-1966-mustang-hydraulic-master-cylinder-clutch-pedal-kit-billet-reservoir/
T5 adapter plate - https://www.moderndriveline.com/shop/adapters/ford-transmission-adapters/standard/ford-t-5-to-wide-pattern-ford-289-302-351-1967-200ci-no-rotation-adapter-plate/
MDL Flywheel - https://www.moderndriveline.com/shop/flywheels/ford-flywheels/flywheels-ford-flywheels/fw-lbs-200ci-136-tooth-ring-gear-9-clutch-pattern-zero-balance/
MDL Clutch - https://www.moderndriveline.com/shop/clutches/ford-clutch-kits/9-ford-clutch/9-ford-clutch-assembly/
MDL Crossmember - https://www.moderndriveline.com/shop/cross-members-mounts/ford-crossmembers/mustang/crossmember-1965-66-mustang-t-5/
Flywheel Bolts - https://www.moderndriveline.com/shop/clutches/clutch-accessories/clutch-hardware/arp-fasteners/arp-ford/arp-flywheel-bolt-kit-7-16-ford-chevy-set-of-6-arp-100-2801/
2 bolt starter - https://www.oreillyauto.com/detail/c/ultima/alternators---starters/starter/dad3c6651e74/ultima-starter-remanufactured/ost0/r713146a/v/a/15191/automotive-car-1966-ford-mustang?q=starter&pos=1
T5 Rebuild P1 - Eric The Car Guy
https://www.youtube.com/watch?v=XREsRG9Y1mU&pp=ygUgcGF1bCBjYW5naWFsb3NpIGVyaWMgdGhlIGNhciBndXk%3D
T5 Rebuild P2 - Eric The Car Guy
https://www.youtube.com/watch?v=mR8LetFQSoc&pp=ygUgcGF1bCBjYW5naWFsb3NpIGVyaWMgdGhlIGNhciBndXk%3D
@ModernDrivelineInc
DISCLAIMER: These videos show my way of doing things. Don't necessarily follow my advice, I could be wrong. You are responsible for your actions. Not me.