Boost Gauge Question

[Kennebellstang]

I have a 2.1kb on my car and i don't have a clue where the best source to "T" off to run to my boost gauge.

Could anyone tell or show(via picture) where the best place would be?

Thanks

 

[scott2001GT]

Find a stock lines they are still there. but maybe the bypass valve line?

 

[USACHMP]

any line will work. I went of one by the upper intake plenum