Just curious as to why you rather go through the trouble and change the input shaft on a new transmission rather than changing the disk. My assumption is you must have a good supply of disk already.

Lots of different types of spark plug rethreader's, inserts,  repair kits out there from basic to "professional". For what it's worth i used a cheap rethreader kit from Amazon and repaired 2 holes on my old 360 beater truck about 10 years ago  and  have  had zero problems.  I did loctite them in and always use anti seize on those 2 plugs.

Saterday only this year for me.

Good hearing from you Blair, thanks for the info.

Pluchino is on a roll. 2 in a row.
Elisha Morton went 4.00 with a 9 in the Semi finals but was way late and got beat. Oh so close to that 3 sec run. Was suprised Kurt Neighbor wasn't there,  he ran his personal best at Galot a couple weeks ago.  I was at both races,  PDRA is my jam. Waiting on Buds Creek in June.

They don't wanna talk to you, whom ever you do finally get to talk to don't know squat about the parts they sell. It's ridiculous. I got so I use speedway motors for catalog type parts. Been useing competition products for most engine related parts for years and Vincent performance for hard core engine parts. Been pretty happy with both.

Or make your own plenum