Engine Id, 911/07 with # 614xxxx

[917Chris]

I have a pieced together car, needing to rebuild the top end, but can't quite figure out what I have. Here are the numbers, Emission Control tag says, 911T - 134.2 cu. in.
serial # 6145328, type stamp 911/07 engine cases are, 901.101.102.3r , 901.101.101.3r .
I'm thinking it is a 1971, 2.2 L , that the serial # has been changed, but it does not look like it. This is what it is in,

[917Chris]

Also I may have some pulled head bolts, it has been recommended I hela coil them, what size should I get ?

[Trackrash]

Does the motor have iron cylinders? Then, yes a T motor. The heads will have a date of manufacture cast in them. Double check the type number, should be a 911/03.

What carbs does it have?

You might want to post a picture maybe some of the experts can add some info.

Usually the mag case motors like yours should have case saver inserts installed. You would have to dissemble to do that. I will differ to others as to the effectiveness of heili coils.