perhaps we need 6-1 headers?

[The Radium King]

no problem ...

this link has some good sounds. part way through you get to listen to two lancias; one with 6-1 and one with 6-2 - the difference is very distinct:

https://youtu.be/DRI9CLF53Vw

i figure you could take a set of chinese equal-length headers (fabspeed knockoffs) and cut at the collector. then extend them to back by the transaxle where you incorporate one of these:

https://www.ebay.ca/itm/164720743423?chn=ps&norover=1&mkevt=1&mkrid=706-89093-2056-0&mkcid=2&mkscid=101&itemid=164720743423&targetid=1657494600950&device=c&mktype=pla&googleloc=9001627&poi=&campaignid=17288881879&mkgroupid=135489415103&rlsatarget=pla-1657494600950&abcId=9300870&merchantid=584336830&gclid=EAIaIQobChMIyKqgiqCg_wIVoc3jBx3G8QvkEAQYASAB EgL01fD_BwE