PSM M1A1 TUSK conversion questions

I have the Perfect Scale Modellbau M1A1 TUSK conversion, item no 35039 plus item no 35048 M1 TUSK shields.

I intended to use both sets on the Dragon M1A1 AIM kit.

My questions are:

What is the timeframe that M1A1 TUSK vehicles were operated? I am assuming around the 2005-2008 timeframe.

Can I use the armor shields set for a M1A1 TUSK vehicle? The set looks to me as if it is designed for a M1A2 vehicle.

Does anyone know how accurate is the conversion set?

Any other suggestions on this conversion are welcome.