Thanks for reaching out to us. Starting with the tilt latches, the design of your original more closely matches our 26-243 and 26-244. You will need to review our dimensions before you buy anything to verify; that will be the determining factor.
As for the pivot bar, it's not possible to ID a match in its current condition. If at all possible, I'll need to see an undamaged version in order to check our inventory for a match.
Lastly, for the pivot shoe, I do agree that our 15-215 is similar in design. As before, you need to compare your dimensions with ours to confirm. As for removing the spring, it should be either hooked in or screwed in. You will need to remove the assembly from the window to check. If you did end up wanting to replace the whole thing, that would be our Series 140.