Pal Agnus in NTSC A2000?

[Oldsmobile_Mike]

I wanted to upgrade to an Indivision ECS, and this component was necessary.

IMHO try to score yourself a MegaChip of some sort (8375 on an adapter board with extra memory chip, gives you up to 2MB chip ram).  Once you get your Indivision you're going to want to make use of the higher screenmodes it supports, and the extra chip memory is very useful for that.  

[Oldsmobile_Mike]

How many colors can you use with an ECS machine and Indivision ECS?  ie how many colors on WB?

Indivision ECS supports 800x600x16 color Workbench under ECS.  Best with an accelerator and some extra memory, obviously.