how fast can a 4age 20v sprinter silver top go

and what mods can u do to 1

lots...
speed wise 180k limiter, over 230-240 tho un limited, silvertop can be turboed. pritty much the same as any other engine but n/a tuning will cost abit more as its already up there....

i would keep it n/a and bore it out and port and polish. ITB's stock...... cant beat that