What Tuner is this?

[hastings]

Could anyone please tell me what tuner I have on my 2.5.
Is it for a 260 and is it a long throw?
I just took apart and found that I have a 280 ROS on a 2.4 exhaust plate and wondering about the tuner.
The 2.4 exhaust plate has been worked to match the openings of the block and the tuner.
Will it work with a 280 or will there be a restriction in the middle of the 2.4 exhaust plate.
Anyone have any experience with this?

The part number off the tuner is 821377-C.


Thanks
Doug

[WATERWINGS]

I can't answer, but I want to hear the answer.

When I do exhaust chest work, I have to open the exhaust plate to match.

All my stuff is 2.4