my 2 into 1 - 1 3/4" into 1 7/8ths -- into a 1 7/8ths collector that ups to 2 1/4 -- then into that 4" cone and it has a disc on the end -- no muffler - 97" 11:1cr leinweber L-3 dual plugs - ya don't want this - its loud,loud,loud -- I can watch the little pebbles dance on the ground when it idles .. yeah ugly no chrome -- but it works

 

^^^ You have compared that with a Thunderheader??? Even a Couple of Time Slips [1/4 mile MPH preferred]
Looks close... but, why no cone on the output end???

 

HEY PREZ THIS ONE HAS A CONE AND A BUG CATCHER -- YES SHE RIDES THIS ALSO

 

^^ No... a reverse cone... you know, for reversion!!!
I think I see a crossover there tho... I personally like that.