Any blown modular engine in a fox is going to be expensive.
It's a very cool project, but it's also commonly underestimated.
Count on spending 10g's minimum.
IMO, not worth it unless you are doing a built shortblock or 03 cobra conversion.
And just so you are aware, if you toast a dohc shortblock with boost, it will be insanely expensive to fix, especially if it's aluminum, god damn thing takes $500 in arp bolts and $200 in head gaskets, and you haven't even started on the labor or pistons and rods.
The modular fox site is still active, just remember this swap is not all that common, there is millions of guys with 5.0 foxes, but a minimum number of guys with foxes with dohc engines.
So it moves along at a snails pace.
Rember it's one small site with 1 purpose, where's if bigger forums deal with all types of stuff.