Yes. It's a 5/8 UNC thread if you take the screen out. I could probably put it back on but I'd loose some compression of the oring. I'm not sure it's still perfectly flat after the welding so more squish is better.
I've still got more finish work to do on it and I'll cut the tube to length and bead it once I get the IC plumbing together.
How do you plan to seal the bolt hole up top?
If I were tearing into it, that's the road I'd go.If you're going through the trouble of removing the intake I'd just weld / purchase one that's already been converted
EDIT
How about this for a starting point?
https://www.amazon.com/gp/product/B003BZYZFC/ref=ox_sc_act_title_1?ie=UTF8&psc=1&smid=ATVPDKIKX0DER
Weld a sheet on top and a tube, similar to how laserjock did it.
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