.96 A/R I think. Not sure what's the actual size on it, that's just what was listed.
I'm have a single Tial 44mm now. Plan on is just using it and not using duals.

 

.96 A/R is just the exhaust housing size. It doesn't tell anything about the turbo size. We need to know what the compressor and exhaust wheel size are. The single 44mm will be just fine IMO.

 

98mm looks like
Compressor inducer 69mm
exducer 98mm
turbine inducer 88mm
exducer 77.5

I plan on replacing it eventually with something better. I know its gonna have bad lag especially with only 4.8l.

 

What do you consider bad lag? That turbo isn't that large really. You have a tight t4 housing which will help spool. I'm running a 75mm compressor housing on a 4.8 and the lag isn't terrible. I'm actually thinking of stepping up to a 80mm.

 

That would be considered a 69mm turbo by most people, well, a 69/77.5 with a .96 a/r. Kind of lop sided with a large turbine. Looks like they stole the design from a diesel. It should do what you want for a 4.8 though. For hot pipes, you really should look into either KB Racing or Trick Performance. So much better than any of the Chinese stuff out there.

 

for hot pipes I am running a Huron speed turbo log. The downpipe and wastegate piping is what I need. And nowhere sells that stuff separately that's not ching chang Chong origin