Luke, I run one of these on both mine and Lee's YB Westys with 044 pumps/ECU, Lights etc etc. No problems and widely used in the kit car race world.

Mine has been on the car for 2 years now and works fine mate. Lees about 6 months which is more like 10 years abuse and is perfect. You wont have any problems.

They are very versatile in that you can mount them in different positions and they are nice and small. Also wont leak everywhere should the worst happen.

I buy them from Knight Batteries which is cheaper than that eBay guy. £90 delivered so you save £7.50 too. You will need to buy a pair of the round post adapters for that battery too. They also sell all the mounting brackets too. Hope that helps.

Battery

Square Terminal Adapters

Round Post Adapters

Mounting Brackets

Stu