Thanks great tips. I just changed my throttle gasket and it was no coolant in the uim...at the time. The area around the stovepipe was intact also, at the time...


So all I would need is 1/4" NPT tap...... http://www.harborfreight.com/6-piece-pipe-tap-die-set-91395.html.
and

2- 1/4" NPT pipe plugs? from a hardware store ? Example.... Search: 1/4" NPT pipe plug | Tubing Cap and Plug | AutoZone.com


Is the opening up the area behind the endcap on the LIM a must, if I plug the passages off?