I would like to make a quick recommendation though. You're going to want to mount that coil straight up and down especially when using the MSD box.
Reason: The Blaster canister style coils are oil filled for cooling. When you lay the coil down sideways you create an air bubble in the oil exposing the coil windings. When these coil windings heat up they will break down and cause the coil to fail.
You may hear many people saying they've done it that way with no issues but I'd hate to see a coil fail on you in the middle of nowhere on a trail.
If you are dead set on using a round canister style coil like that use MSD part number 8222. This coil is epoxy filled and not oil filled. If you want the best coil; bang for your buck to mount in that same spot look into the Blaster SS coil part number 8207.
This coil is more powerful; more efficient and can be mounted anywhere in any position... That last part sounds a little dirty. Keep with me boys we're still talkin coils!
If you have any questions let me know.
-Phil
MSD Ignition