First engine build, need some help

[deflator]

This engine has been a project for about 2 years now due to illness. Due to the long hiatus, I cannot remember a lot of how it goes back together and what I needed.

I think I may have been sent the wrong tensioner arm by whomever I bought it from. I'm doing a 6 bolt swap onto my 7 bolt head and the 6 bolt tensioner does not seem to line up with the arm. Picture included.

It also seems like I messed up on the crank sprocket, I didn't line up the marks with the mark on the front case. I am not sure this is a big deal, could I make a new mark for TDC or does it really matter how the sprocket is orientated?

Oh and here's a really dumb question, where does the stock-style turbo coolant return go to?

 

[BLINKY619]

that doesnt look right... im still learning so im not sure if the 6bolt one is different than the 7bolt