trans temp guage??

[habitatxskate]

can someone point me in the right direction for a cheap trans temp gauge?

and which of the two coolers would you use?

https://www.jegs.com/webapp/wcs/stores/servlet/product_10001_10002_31948_-1
http://www.partsamerica.com/ProductDetail.aspx?MfrCode=IMP&MfrPartNumber=242010&PartType=895&PTSet=A

 

[88Silverado]

I got my guage setup thru bowtieOD but im sure you can find them on eBay or local. The B&M is a good cooler