Oil temp gauge sender

[mendyxr6]

Hi,

I recently got an autometer electric oil temp gauge and was wondering if any one has one fitted and if so where did you mount the sender?
(if your wondering why it's because i got them cheap)

I was thinking or using a T piece to tap into the oil cooler lines. ( it's a series 3 xr8)
Any other suggestions for where to mount it. I'd prefer to not have to drill into the sump and weld in a fitting.