questions about this ebay o2 housing

[redline7]

ok so I am gonna give the ebay o2 housing with the recirculated wastegate a shot. I only need it because I have a 20g thats setup for external waste. My 14b has a broken manifold bolt and also has more isssues which is too costly to fix. If I go with this ebay o2 I would need to weld a flange to bolt up to my downpipe but I cant find out what size flange I need. I am also wondering if the wastegate is gonna clear the alternator. Here is the link.
95-99 Eclipse 2G DSM 38MM WG O2 Housing Dump Pipe 4G63:eBay Motors (item 220460877126 end time Aug-31-09 00:05:00 PDT)

 

[Dsmj89]

Is the external on your exhaust manifold already ? Or do you want to run it off the o2 housing ?

 

[redline7]

yeah I would run the wastegate from the o2 housing. Before I buy this I think I am gonna shop around for a broken turbo and just swap parts to fix my 14b. Honestly not ready to use a 20g.