300/440/550 is this aftermarket?

[oxnard111]

my brother is selling this engine from a 1980 440. He got the ski for free and is just parting it out.

Neither him or I have experience with 440's. We were wondering if this is a stock pipe or an aftermarket one?

Thanks


http://cgi.ebay.com/ebaymotors/Kawa...020QQitemZ300139024523QQrdZ1QQsspagenameZWDVW

 

[superjet0587]

looks stock

 

[DAG]

its a B modmodmod pipe hints its small chamber

 

[SuperJETT]

stock