It may not be seen but its still there so this is not "quality work" what if the slag breaks off into the coolant gallery its just crap work brother these ppl should be ashamed of themselves. Take some pride in your work if someone is paying you for a job.
1994 Glacier White Pearlglow Stage III+ 300ZX TT Coupe Best Dyno 332 RWHP and 367 RWTQ 1990 Glacier White Pearlglow 300ZX N/A Coupe (Daily Driver) Props to all the Admin of this Forum