For what its worth ------ I bought a used set of 113's from a forum member here for a decent price. I stripped them and took them to work to check for cracks. The guys in our NDT lab were surprised at the quality of the material. These guys deal with high quality aircraft parts every day and they commented that they did not expect to see this high of quality material in an automotive aluminum casting.

 

113 heads have a good rep around the industry.

 

0.200". - 0.300". - 0.400". - 0.500".

120/096. 160/123 . 186/140 . 196/155. - 163cc (L98 TPI w/58cc & 1.94/1.50) - Also known as 'D-113' heads

122/096. 177/124 . 217/147 . 229/166. - 165cc (Edelbrock Performer Corvette #60879 w/60cc 2.02/1.60 valves)
125/094. 177/123 . 220/144 . 254/155. - 181cc (AFR 180 w/ 68cc & 2.02/1.60)
144/121. 208/157 . 244/188 . 262/202. - 191cc (AFR 190 w/ 76cc & 2.02/1.60)
141/107. 201/143 . 247/175 . 258/190. - 195cc (Canfield w/ 67cc & 2.02/1.60)

127/109. 180/142 . 219/167 . 242/181. - 175cc (Trick Flow 23º 175 w/ 56cc & 1.94/1.50)
129/108. 195/156 . 240/178 . 255/190. - 180cc (AFR 180 Eliminator w/68cc & 2.02/1.60)

Most of the numbers come from CHP Head Database. The Performer Corvette,
AFR 180 Eliminator and Trick Flow 23º 175 numbers come from their respective
manufacturers.

Something to keep in mind when comparing different heads. The
CHP data shows that flow often diminishes as chamber size gets
smaller on different models of the same head. So consider this
when looking at numbers for heads from different mfrs.

If head 'A' with a 69cc chamber flows more than head 'B' with a 61cc
chamber, don't assume you can get head A, mill it down to your
desired chamber size and still see the same flow capacity - the
CHP results suggest that flow will drop.

The Trick Flow 23º 175 heads above price out at $1K -$1.2K,
depending on the spring package.

TFS-30300001 - 1.250" Single Springs
TFS-30300002 - 1.470" Single Springs
TFS-30300003 - 1.460" Dual Springs

I'm not sure I could have someone rebuild and port D-113 heads
at a comparable price in my neighborhood when all is said & done.
Looking back at head work that has been done for me in the past,
I have not been satisfied.

.

 

If you plan to go to a SR you might as well put a good set of aftermarket heads on to take advantage of the intake. Either that or a PORTED set of 113 heads.

I have 195 trickflows and for the last 2 years have been troublefree. Shipped from summit $1240.
I was going to go with AFR heads but 2 years ago they were in the thick of having problems with their heads. IF they corrected those problems I would consider them as well.
I wouldn't go with the 175 trickflows, seem more to me to be suited to a 305 engine.
Contrary to what you read the 195 heads are fine for a 350.

 

Or a dual-purpose 350 car with an auto and 3.07 gears
that runs within a 1500-5500 RPM range at AutoX events.

.