take it were talkin dual port ? Dont understand the wett issue here as in carb,s wett on out side is real badd buggy,s do burn ! But on the issue of 34 pict series V.S. the 30/31 pict series carb,s ? Yeah as far as stock carb,s solex family goes 30/31 pict is best carb ever made for buggy,s . 30/31 pict was primarily a single port application but around 71 ta 72 they were used for period of about year and a half on dual port motor,s with smaller manifold and end casting,s << Highly sought after by those in the know ! in i think around 73 due too fedral EPA smogg control << When all the BllSht started with all car,s <, Especially fords modified cleveland ???? ! << Ok i hav few Issues ? LMAO But any how volkswagen started using the 34 pict series wich by increaseing the CFM on the carb was primarily too volumize gas better so that engine would runn cleaner ? < Supposedly ! << All BllSht too me << Really do have issues with smogg control regulation,s ? Stinkin govt think,s every body is ignorant i guess ? But too continue 34 pict just cause it,s bigger doesnt mean that it will runn a motor faster or is a better choice for say a bigger bored motor ? Or that it will get better gas mileage ? But with jetting on 34 pict,s ya can volumize more gas for some application,s but this is not a per say Definate < As in you should run out do it thing ? But can tell ya this on a 30/31 pict on a 1600cc 041 heads and engle 110 cammed motor ? <, As with the smaller carb and what is often referd too as the european manifold . << Manifold was used in europe longer than in the states ? That i personally have used this combo and gott the motor too idle with a 110 cam . << Usually requires dual carb,s too get a reasonable idle out of a 110 cam << As for using the adapter plate ive done this also on same motor for sht,s and giggles > <, Didnt get the performance or it seemed not too work quite as well ? But got a reasonable idle with adapter plate . As for the stripped studd,s you can buy proper tapp with drill bit and tapp these out but it,s tricky at best then step stud ? << Personally i see no difference than a modified bolt with exception mine look,s more professional ? LMAO Want more on carb,s ask Can get took for 100 buck,s easy on solex trade in,s for Bocar Mexican carb,s Etc etc . Sean