Confused. gauges question

[1970 C10 MJW]

I am doing a 5.3 swap and I am wondering what you guys are doing for gauges, I would like to have a tach... and i don't have a tach in my cluster right now. I dont want to spend the money on a dakota digital, or anything like that, so what can i do? i also dont like the look of the newer cluster in place of the stock one like a few people have done... so basically can how can I use the original gauges and just mod them some? I have also thought about getting a new cluster bezel and then putting autometer gauges in the holes... any ideas/help would be appreciated