78 C10 - What are my in-dash tach options? I'm looking at GMSports aftermarket tach.

[jb3t]

Sorry for the dup thread but I made a bad typo on my other thread's title that renders it almost useless. My bad.

I've got a 1978 C10 that has the jumbo gas gauge and an empty space in the lower left. I'd like to put a tach in without doing too much damage to the housing and being as plug-and-play as possible.

Have any of you installed the tach from GM Sports? If so, is it plug-and-play?
http://www.gmsports.com/content/new-...and-gmc-trucks

In a perfect world, I'd like to have the fuel gauge in the lower left and the tach taking over the jumbo fuel gauge. I've read through a lot of the posts on this and it seems that if you go this route, you have to a) find an OEM tach somewhere and b) hack up the box to get it to fit. Is this right?

Last note... I have read a ton of posts on this but have not found conclusive info on the GM Sports product


Thanks.