does this 360 t chain look too loose?

Ya ... just a bit ..... ya can put the timeing cover on it and see in the crank is still in the center of the seal. If not a new under size line bore chain will only fix the one bad thing that is going to give ya head pains. Next will be the oil leaks from the rear main and T/C seals. Stock pistons and cam will be ok but is ya went to a zero deck and or a big cam ya will need to clay it to check for valve clearnce. Not tryin to freak ya out but iv been there dun that. In the end cost me a bunch of cash and still had to trash the block and start over. ...... If your not happy take it back or atleast make a call